Air-cushion nozzle



G. A. MILLAR. AIR' CUSHION NOZZLE. APPLICATION FILED MAR-5, 1920.

Patented Sept; 6, 19211.

gwun ro'o G. H. MILL/1R zles; and I do hereby UNITED STATES PATENTOFFICE.

GECRGI'J A. MILLAR, OF ENSLEY, ALABAMA.

Am-cusmon NOZZLE.

Specification of Letters Patent.

Patented Sept. 6, 1921.

Application filed March 5, 1920. Serial No. 383,483.

To allwhom it may concern:

Be it known that I, GEORGE A. MILLAR, a

citizen of the United States, residing at Ensley in the county ofJefferson and State of Alabama, have inventedcertain new and tion ofadverse action of the air, at the tip of the nozzle as well as renderingthe stream smooth and noiseless. I

Another object is the provision of a rim surrounding the tip of thenozzle to serve as a protection for insuring a perfect end or tip on thenozzle at all times, protecting the end of the nozzle from being injuredif it strikes or drops on a hard surface.

A further object is the provision of means for the entrance of air fromin' rear of the tip of the nozzle to provide an air cushion.

surrounding the stream where it leaves the nozzle, and serving thepurposes of increasing the velocity and smoothness of the stream and thedistance to which it is thrown, as well as avoiding the usual action ofthe air in breaking upthe stream, to a lar e extent.

ith the foregoing and other objects in view, which will be apparent asthe description proceeds, the invention resides in the construction andarrangement of parts hereinafter described-and claimed, it being iunderstood that changes can be-made within the scope of what is claimedwithout departing from the'spirit of the invention The invention isillustrated in the accompanying drawing, wherein Figure 1 isalongitudinal section of the improved nozzle.

*ig. 2 is an end view thereof.

The nozzle 4 can be made in any suitable size, having an attachingportion 5 at its.

larger end, and the passage of the nozzletapers to a point 6 near'thetip from WhlCh point the passage is substantially cylindri cal oruniform in diameter to the tip or discharge end.

In carrying out the. invention,' the nozzle I is formed, with an annularoutstanding ,fiange 7, which is spaced rearwardly slightly from thedischarge end of the nozzle, and s a1d' fiange has a forwardly-extending,cylindrlcal rim 8. projecting for a distance beyond the; tip of thenozzle and of a larger diameter than the tip. The outer end of ther m 8has an outstanding annular rib or bead 9, which, in contacting with ahard surface, should the nozzle be dropped or strike such surface, willprevent the tip of the nozzle being injured. In this way, the dlschargeend of the nozzle will remain perfect and the stream passes through therim with an annular air space between said rim and stream.

The flange 7 has an annular series of apertures 10 therein substantiallyparallel with the rim 8 for admitting air from in rear of the dischargeend ofthe nozzle within the'rim 8, so that the stream of water or liquidwill draw air through the apertures 10, formingv an air cushion betweenthe rim and stream, whereby to smoothen the stream and increase thevelocity thereof, as well as avoiding noise and agitation of the stream.The air will continue to flow through the apertures 10 due to the actionof the stream in drawing the air into the rim 8, which has been found tomaterially increase the velocity of the stream and the distance to whichit is thrown, as well as making the stream smooth and noiseless:

Having thus described,.the invention, what is claimed as new is Anozz'le having an outstanding annular flange slightly in rear of the tipthereof, and a eylindrlcal rim carried by said flange surrounding andprojectin beyond said tip, said flange having air in ct openingssubstantially parallelwith said rim.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

GEORGE A. MILLAR.

Witnesses: J. B. MCINTYRE, Jr.,

A. F. ERVING.

